Block-molding machine.



Patented May 24, 1910.

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J. W. BRAGSTAD. BLOCK MOLDING MACHINE.

APPLICATION FILED DEC. 3, 1909.

Patented May 24, 1910 2 8HBETS-SHBET 2.

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UNITED STATES PATENT OFFICE.

JOSEPH W. BRAGSTAD, OF CANTON, SOUTH DAKOTA, ASSIGNOR TO THE BRAGSTADBROS. 00., INC OF CANTON, SOUTH DAKOTA, A CORPORATION OF SOUTH DAKOTA.

BLOCK-MOLDING MACHINE.

To all whom it may concern:

Be it known that I, JOSEPH W. BRAG- same, a citizen of the United Statesof America, residing at Canton, in the county of Lincoln and State ofSouth Dakota, have invented certain new and useful Improvements inBlock-Molding Machines, of which the following is a specification,reference be ing had therein to the accompanying draw- 111g.

This invention relates to block molding machines and the object thereofis to provide a machine of such class in a manner as hereinafter setforth and claimed for molding a plurality of separate blocks of the sameor of different coutour simultaneously,

A further object of the invention is to provide a machine of such classwhich is portable so that it can be readily transported from place toplace when occasion so requires.

A further object of the invention is to provide a machine of such classin a manner as hereinafter set forth and claimed which is particularlyadapted for molding a plurality of blocks each formed of two sectionsand coupled together by anchoring A further object of the invention isto provide a block molding machine in a manner as hereinafter set forthand claimed, by which a block can be manufactured out of slush concrete,that is, making a water-proof block.

A further object of the invention is to provide a block molding machinein a man ner as hereinafter set forth and claimed, which will enable theblock to be faced radially and equally and which allows of the operatorconveniently ornamenting the outer face of the block if occasion sorequires.

Further objects of the invention are to provide aportable block moldingmachine which shall be comparatively simple in its construction, strong,durable, etficient in its use, simultaneously molding a plurality ofblocks, conveniently manipulated, and comparatively inexpensive tomanufacture.

lVith the foregoing and other objects in view the invention consists inthe novel construction, combination and arrangement of parts ashereinafter more specifically de- Specification of Letters Patent.

Application filed December 3, 1909.

Patented Ma; 24, 1910.

Serial No. 531,268.

scribed and illustrated in the accompanying drawings, wherein is shownthe preferred embodiment of the invention, but it is to be understoodthat changes, variations and modifications can be resorted to which comewithin the scope of the claims hereunto appended.

In the drawings, wherein like reference characters denote correspondingparts throughout the several views, Figure 1 is a plan of a blockmolding machine in accordance with this invention, showing a portion ofthe machine filled with the material from which the blocks are formedand the remaining portion empty, Fig. 2 is a side elevation of themachine, Fig. 3 is a cross sectional view of the machine with the lowerportion thereof containing material for forming one half of the block,the upper portion of the machine being empty, Fig. 4 is a detailillustrating the form of partition plate used in connection with the construction shown in Fig. 3, Fig. 5 is a view similar to Fig, 3, Fig. 6 isa view of the partition plate used in connection with the constructionshown in Fig. 5, Fig. 7 is a view similar to Fig. 3 of a modification,Fig, 8 is a detail illustrating one of the looking devices for adjustably connecting the removable bottom to the body-portion of themachine, and, Fig. 9 is a detail illustrating the form of supportingbracket carried by each end plate of the body-portion. l Referring tothe drawings in detail, 1 tie notes a front axle, and 2 a rear axle, andwhich are provided with wheels 3 and connected together by reach bars4:. Each of the axles is provided with a pair of inwardly-extendingshiftable supports 5 which are capable of being elevated to the positionshown in Fig. 1 so as to support the body portion and which can also belowered to enable the body-portion to be rotated upon the axles 1, 2,when occasion so requires.

The body-portion of the machine which also may be termed the moldconsists of the side plates 6, 7, end plates 8, 9, removable straps 10,and a removable bottom 11. The bottom 11 is mounted upon the straps 10when occasion so requires. Secured to each of the end plates of the bodyportion, that l is, to the outer face of each of said end plates, is asupporting bracket which consists of a transversely-extending arm 12terminating at each end in a vertically-disposed arm 13, the latterhaving at its upper end and at its lower end an outwardly-extendingapertured lug 14. The arm 12 approximately centrally thereof is rovidedwith a right-angularly disposed trunnion 15. The trunnions 15 extend inthe bearings 16 carried by the axles 1, 2, and rotatably sup; port thebody-portion of the machine. Each of the side plates 6, 7 at each endthereof is provided with a pair of outwardly-extending apertured lugs 17which register with the apertured lugs 14, and extending through saidregistering lugs are vertically disposed coupling elements 18 forconnect ing the side and end plates of the body-por tion together;

The bottom 11 is adjustably secured in positi-on within the side and endplates by the straps 10 and a series of coupling devices each of whichconsists of a bolt 19 threaded at its lower end, carrying a nut 20 andat its upper end formed with an eye 21 through which extends a pivot22,- carrying a cam lever 23, the latter straddling the upper portion ofthe bolt 19. To each of the side plates at their lower ends is secured aseries of angle irons 24 and which are slitted as at 25. The straps 10are arranged against theangle irons 2-4 and are of such length as toproject from the side plates of the body-portion and have each endformed with a slit 26 which registers with a slit 25 in an angle iron24. The bolts 19 are adapted to be positioned in the registering slitsand when the cam levers 23 are shifted in one direction the straps areconnected to the angle irons whereby the bottom 11 is not only securedin position but also supported when the body-portion of the mold is inthe position as shown in Figs. 3, 5 and 7. The means for connecting thesides and ends of the body portion together as well as the means forcoupling the straps 10 in position is of like construction in Figs. 3, 5and 7 the same reference characters being used throughout the figuresjust referred to.

Referring to Fig. 3, the side plate 6 as well as the side plate 7 isprovided with what may be termed an inwardlyextending outer core of alength equal to the length of its respective side plate, the core whichpro= jects from the side plate 6 being oppositelydisposed with respectto the core which pro= jects from the side plate 7 Each outer core isformed of three sections 27, 28 and 29. The section 28 inclines and hasits inner end off-set as at 2.9 to provide a seat 30 for a purpose to bepresentlyreferred to. The off-set end of the section 28 is slotted as at31. The section 27 is formed of a pair of transversely-extendingportions arranged in difierent planes and connected together by avertically-extending portion 32. That transversely-extending portion ofthe section 27 which indicated by the reference character 32 is fiat,while the other inclines and the portion 32 is of less length than theother transversely-extending portion of said section 27 and isslotted'as at 33, the slot 33 opposing the slot 31. The section 27opposes the section 28 and the transverselyextending portion 32 of thesection 27 is spaced from the section 28 by the section 29 whichconsists preferably of a wooden block, but it is evident that suchspacing member can be formed by any suitable material. The sections 29also constitute abutments as well as guides for continuous anchors 34which are rectangular in contour and extend down through the registeringslots of the outer cores as clearly shown in Fig. 3. The machine furthercomprises an inner core which is formed of two L- shaped sections 35 and36 and of a length equal to the length of the mold, said sec tions beingoppositely-disposed with respect to each other and thesaid sections 35and 36 are mounted upon the ofi -set portions 29 and thetransversely-extending portions 32 of the sections 27 as clearly shownin Fig. 3. The anchors 34L are positioned prior to the placing of thesections of the inner core in position.

Each block is separated by pairs of partitions and each partitionconsists of a flat bar 37 provided at a point near one end with aright-angularflat projection 38. Each of these partitions conform inshape to a section of a block. For maintaining the partitions inposition the inner face of each of the side plates of the body portionis formed with a pair of spaced guides 39 bet-ween which the bars 37extend; when a pair of partitions are placed between the blocks theprojection of one partition engages the transverse portion 32. Thepartitions in connection with the end plates of the body portionconstitute means for molding the sides of the blocks.

The construction as illustrated in Fig. 3 is used for molding aplurality of sectional blocks, with the sections coupled together byreinforcing anchors 34, two anchors being employed for coupling thesections of each block together, and each section consists of abody-portion provided with an extension, the anchors being mounted inthe extensions and the bodyportion. The sections of the block whenmolded are spaced from each other. This is evident owing to the mannerin which the outer and inner cores are arranged. The inner cores are sodisposed with respect to the side plates of the body portion that thespace within the body portion above said cores will be of less heightthan the space below the cores. This arrangement is had in view of thefact that the bottom 11 is positioned between the side and end plates ofthe mold. The bottom 11 is of a length equal to the length ,of thebody-portion and is adjustable where by the body-portion of the lowersection of the block can be made of varying thickness. The outer coresare fixedly secured to the inner face of the side plates of thebody-portion.

hen using the construction shown in Fig. 3, the body-portion isinverted, that is to say, it is oppositely-disposed with respect to theposition shown in Fig. 3, the partition plates and anchors being mountedin position, the material is supplied to the body-portion and after asuflicient quantity has been placed therein, the bottom 11 is mountedbetween the sides and end plates and the straps 10 connected by thecoupling devices to the side plates. The body-portion is then given ahalf turn which brings the empty portion thereof to the top, the material is then supplied to the emptied part of the body-portion andafter the necessary quantity is supplied it is troweled and faced off asdesired. Prior to the placing of the material in the empty part of thebodyportion the other partition plates are mounted in position.

The construction as shown in Fig. 5, is designed for molding blocks ofone piece and referring to said figures the side plates of thebody-portion are indicated by the reference characters 40 and 41, andthe end plates by the reference character 42. The side plates 40 and 41are provided with spaced guides 39 for the partitions 4-2. Each endplate of the body-portion is formed with laterally-extending studs asfor supporting the sections of the inner cores. Each inner core of theset shown in Fig. 5 is formed of four sections a l, 45, as and 47, eachof said sections being angle-shaped in cross-section. The sections 4%and 46 are mounted against a pair of lugs 43 and the sections 45 and T7are mounted upon one lug and overlap the ends of the sections 44 and 46.The inner cores of each set are spaced from each other as at as, and arefurthermore surrounded by the anchors 49 which constitute reinforcingmediums for the blocks. Each side plate of the bodyportion is formedwith an outer core 49* which is curvilinear in contour. The partitionsare indicated by 47*.

The construction shown in Fig. 7 is de signed for forming sectionalblocks connected together by reinforcing anchors 50. In Fig. 7 the sideplates of the body-portion are indicated by the reference characters 51,52, and each is provided with an inwardlyextending V-shaped outer core58 slotted as at 54 for the passage of the anchors. The inner core isformed of two sections 55, 56 which are oppositely-disposed with respectto each other and angle-shaped in cross-section and are of such width asto engage the inner ends of the outer cores 53.

What I claim is:

1. A block molding machine for manufac turing simultaneously a pluralityof sectional blocks, comprising a rotatable bodyportion provided with aremovable bottom, an outer core secured to and projecting from the innerface of each of the sides of the body-portion, means to constitute alongitudinally-extending removable inner core arranged between the outcrcores, upper and lower transverselyextending partitions scated upon theouter and inner cores, and means carried by the sides of thebody-portion for maintaining said partitions in position.

2. A block molding machine for manufacturing simultaneously a pluralityof sectional blocks, comprising a rotatable bodyportion provided with aremovable bottom, an outer core secured to and projecting from the innerface of each of the sides of the body-portion, means to constitute alongitudinally-extending removable inner core arranged between the outercores, upper and lower t-ransversely-extending partitions seat ed uponthe outer and inner cores, means carried by the sides of thebody-portion for maintaining said partitions in position, said outercores alternately-disposed with respect to each other and each havingits inner end cut-away to provide a passage for anchoring means.

3. A block molding machine for manufacturing simultaneously a pluralityof sec tional blocks, comprising a body-portion formed with side and endwalls and a removable bottom, coupling devices embodying cam levers foradjnstably connecting the bottom to the sides of the body-portion, alongitudinally-extending outer core projecting inwardly from the innerface of each of the side walls of the body-portion,longitudinally-extending means constituting a removable inner corearranged between the said outer cores, upper and lowertransverselyextending partitions mounted upon both sides of said cores,and means carried by the sides of the body-portion for maintaining saidpartitions in position.

4. A block molding machine for manufacturing simultaneously a pluralityof sectional blocks, comprising a body-portion formed with side and endwalls and a removable bottom, coupling devices embody ing cam levers foradjustably'connecting the bottom to the sides of the body-portion, alongitudinally-extending outer core projecting inwardly from the innerface of each of the side walls of the body-portion,longitudinally-extending means constituting a removable inner corearranged between the said outer cores, upper and lowertransversely-extending partitions mounted upon both sides of said cores,and means carried by the sides of the body-portion for maintaining saidpartitions in position, said outer cores being alternately-disposed withrespect to each other and each having its inner end cut-away to providefor the passage of anor ng smalls- A block molding machine formanufacturing a plurality of sectional blocks simultaneously, comprisinga body-portion provided with side and end walls and a removable bottom,an inwardlyextending outer core projecting from the inner face of eachof the sides of the body-portion, said cores alternately-disposed withrespect to each other, a longitudinally-extending sectional andremovable inner core having one of its sections mounted upon one face ofthe outer core and the other of its sections abutting against the otherface of the outer core, and means for detachably connecting the bottomof the body-portion in position.

6. A block molding machine for manufacturing a plurality of sectionalblocks simultaneously, comprising a body-portion provided with side andend walls and a removable bottom, an inwardly extending outer coreprojecting from the inner face of each of the sides of the body-portion,said cores alternatelydisposed with respect to each other, alongitudinally-extending sectional and removable inner core having oneof its sect-ions mounted upon one face of the outer core and the otherof its sections abut ting against the other face of the outer core,means for detachably-connecting the bottom of the body-portion inposition, transverselyextending partitions mounted against the upper andlower faces of said cores, and means for maintaining said partitionsvertical.

7. A block molding machine for manu facturing a plurality of sectionalblocks simultaneously, comprising a body-portion provided with side andend walls and a removable bottom, an inwardly -extending outer coreprojecting from the inner face of each of the sides of the body-portion,said cores alternately-disposed with respect to each other, alongitudinally-extending sectional and removable inner core having oneof its sect-ions mounted upon one face of the outer core and the otherof its sections abutting against the other face of the outer core, meansfor detachably-connecting the bottom of the said body-portion inposition, transversely-extending partitions mounted against the upperand lower faces of said cores, and means for maintaining said partitions vertical, each of said outer cores in proximity to the sides ofthe inner core slotted to provide for the passage of anchor ing means.

8. A block molding machine for manufacturing a plurality of sectionalblocks simultaneously, comprising a body-portion provided with side andend walls and a removable bottom, an inwardly-extending outer coreprojecting from the inner face of each of the sides of the body-portion,said cores alternately-disposed with respect to each other, alongitudinally-extending sectional and removable inner core having oneof its sections mounted upon one face of the outer core and the other ofits sections abutting against the other face of the outer core, meansfor detachably-connecting the bottom of the said body-portion inposition, transversely-extending partitions mounted against the upperand lower faces of said cores, means for maintaining said partitionsvertical, each of said outer cores in proximity to the sides of theinner core slotted to provide for the passage of anchoring means, and arotatable supporting means for and connected to each end of thebodyportion.

In testimony whereof I afi'ix my signature in the presence of twowitnesses.

JOSEPH V. BRAG STAD.

\Vit-nesses CHAs. STUBBERND, D. N. JoHNsoN.

